نتایج جستجو برای: historical trend
تعداد نتایج: 227005 فیلتر نتایج به سال:
We identified the spatiotemporal patterns of the Normalized Difference Vegetation Index (NDVI) for the years 1982-2008 in the desert areas of Northwest China and quantified the impacts of climate and non-climate factors on NDVI changes. The results indicate that although the mean NDVI has improved in 24.7% of the study region; 16.3% among the region has been stagnating in recent years and only ...
Trend following (TF) is a rule-based trading mechanism that taps on the movements of long-term market trend instead of relying on any forecast or external information to decide when to buy and when to sell a stock. Its simple operation is in contrast to complicated prediction methods which typically would try to predict a future trend by analyzing the historical data and may be other factors. T...
Accurate trend estimates are necessary for understanding which species are declining and which are most in need of conservation action. Imperfect species detection may result in unreliable trend estimates because this may lead to the overestimation of declines. Because many management decisions are based on population trend estimates, such biases could have severe consequences for conservation ...
in a survey on development trend of humanities, particularly in the field of arabic literature, holy quran as well as muslims’ efforts for its comprehension and interpretation played an unequivocal role. quranic implications and assertions to historical subjects and social sciences etc along with employing prosodic innovative techniques provided and required ground but the necessity for attenti...
From October 1996 through September 1998, we used bottom-mounted hydrophone arrays to monitor deep-water areas north and west of the British Isles for songs of humpback whales (Megupteru novaeangliae). Singing humpbacks were consistently detected between October and March from the Shetland-Faroe Islands south to waters west of the English Channel. Temporal and geographic patterns of song detect...
Objective The objective was to forecast and validate prediction estimates of influenza activity in Houston, TX using four years of historical influenza-like illness (ILI) from three surveillance data capture mechanisms. Background Using novel surveillance methods and historical data to estimate future trends of influenza-like illness can lead to early detection of influenza activity increases a...
Dynamics of the major USA market indices DJIA, S&P, Nasdaq, and NYSE is analyzed from the point of view of the random walking problem with two-step correlations of the market moves. The parameters characterizing the stochastic dynamics are determined empirically from the historical quotes for the daily, weekly, and monthly series. The results show existence of statistically significant correlat...
PURPOSE OF REVIEW The present review examines recent contributions to the evolving field of historical writing in psychiatry. RECENT FINDINGS Interest in the history of psychiatry continues to grow, with an increasing emphasis on topics of current interest such as the history of psychopharmacology, electroconvulsive therapy, and the interplay between psychiatry and society. The scope of histo...
China provides a unique social-economic and political context for urban conservation and regeneration within the current trend of modernisation and globalisation. This paper investigates 4 urban regeneration projects conducted in four most internationalised historical Chinese cities from 1989 to 2005, in order to understand how traditional architectural elements are manipulated in these project...
This paper combined artificial neural network and regression modeling methods to predict electrical load. We propose an approach for specific day, week and/or month load forecasting for electrical companies taking into account the historical load. Therefore, a modified technique, based on artificial neural network (ANN) combined with linear regression, is applied on the KSA electrical network d...
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